White Electronic Designs
FEATURES
EDI8F321024C
1024Kx32 Static RAM CMOS, High Speed Module
1024Kx32 bit CMOS Static RAM
Access Times: 15, 20, and 25ns
Individual Byte Selects
Fully Static, No Clocks
TTL Compatible I/O
The EDI8F321024C is a high speed 32 megabit Static RAM
module organized as 1024K words by 32 bits. This module
is constructed from eight 1024Kx4 Static RAMs in SOJ
packages on an epoxy laminate (FR4) board.
Four chip enables (EØ#-E3#) are used to independently
enable the four bytes. Reading or writing can be executed
on individual bytes or any combination of multiple bytes
through proper use of selects.
The EDI8F321024C is offered in 72 pin ZIP and 72 lead
SIMM packages, which enable 32 megabits of memory to
be placed in less than 1.3 square inches of board space.
All inputs and outputs are TTL compatible and operate from
a single 5V supply. Fully asynchronous circuitry requires
no clocks or refreshing for operation and provides equal
access and cycle times for ease of use.
Pins PD1- PD4, are used to identify module memory
density in applications where alternate modules can be
interchanged.
DESCRIPTION
High Density Package
72 Pin ZIP, No. 175
72 lead SIMM, No. 176 (Angle)
72 lead SIMM, No. 356 (Straight)
Common Data Inputs and Outputs
Single +5V (±10%) Supply Operation
*This product is subject to change without notice.
FIG. 1
PIN CONFIGURATIONS AND BLOCK DIAGRAM
A0-A19
E0#-E3#
W#
G#
DQ0-DQ31
V
CC
V
SS
NC
PIN NAMES
Address Inputs
Chip Enables
Write Enable
Output Enable
Common Data Input/Output
Power (+5V±10%)
Ground
No Connection
9
9
9
9
#
#
#
#
A0-A19
W#
G#
9
#
#
1 Meg
X4
E0#
DQ0-DQ3
1 Meg
X4
DQ4-DQ7
9
9
1 Meg
X4
E1#
DQ8-DQ11
1 Meg
X4
DQ12-DQ15
9
9
9
9
1 Meg
X4
E2#
DQ16-DQ19
1 Meg
X4
DQ20-DQ23
1 Meg
X4
E3#
DQ24-DQ27
1 Meg
X4
DQ28-DQ31
PD0 AND PD2 = GROUND
PD1 AND PD3 = OPEN
8F321024C Pin Config.
8F321024C Blk Dia.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Aug. 2002
Rev. 8A
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
